./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40ec09d-bea3-4656-b7ee-19ca3021f6f4/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40ec09d-bea3-4656-b7ee-19ca3021f6f4/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40ec09d-bea3-4656-b7ee-19ca3021f6f4/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40ec09d-bea3-4656-b7ee-19ca3021f6f4/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40ec09d-bea3-4656-b7ee-19ca3021f6f4/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40ec09d-bea3-4656-b7ee-19ca3021f6f4/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 435b3fa8073a80dcd9b8b69819909b6031007c35574ec244127e6237bed3be57 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:32:31,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:32:31,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:32:31,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:32:31,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:32:31,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:32:31,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:32:31,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:32:31,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:32:31,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:32:31,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:32:31,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:32:31,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:32:31,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:32:31,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:32:31,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:32:31,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:32:31,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:32:31,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:32:31,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:32:31,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:32:31,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:32:31,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:32:31,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:32:31,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:32:31,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:32:31,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:32:31,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:32:31,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:32:31,316 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:32:31,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:32:31,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:32:31,318 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:32:31,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:32:31,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:32:31,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:32:31,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:32:31,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:32:31,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:32:31,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:32:31,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:32:31,323 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40ec09d-bea3-4656-b7ee-19ca3021f6f4/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:32:31,349 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:32:31,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:32:31,350 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:32:31,350 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:32:31,350 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:32:31,351 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:32:31,351 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:32:31,351 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:32:31,351 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:32:31,351 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:32:31,352 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:32:31,352 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:32:31,352 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:32:31,352 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:32:31,352 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:32:31,353 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:32:31,353 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:32:31,353 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:32:31,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:32:31,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:32:31,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:32:31,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:32:31,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:32:31,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:32:31,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:32:31,355 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:32:31,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:32:31,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:32:31,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:32:31,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:32:31,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:32:31,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:32:31,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:32:31,357 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:32:31,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:32:31,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:32:31,357 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:32:31,358 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:32:31,358 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40ec09d-bea3-4656-b7ee-19ca3021f6f4/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40ec09d-bea3-4656-b7ee-19ca3021f6f4/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 435b3fa8073a80dcd9b8b69819909b6031007c35574ec244127e6237bed3be57 [2021-11-20 23:32:31,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:32:31,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:32:31,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:32:31,612 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:32:31,613 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:32:31,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40ec09d-bea3-4656-b7ee-19ca3021f6f4/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2021-11-20 23:32:31,699 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40ec09d-bea3-4656-b7ee-19ca3021f6f4/bin/utaipan-TEXQjIfE4P/data/5a51b38f4/abd49b9f64364ed5b3c03577cdcecb60/FLAGdb55a8b63 [2021-11-20 23:32:32,710 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:32:32,711 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40ec09d-bea3-4656-b7ee-19ca3021f6f4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2021-11-20 23:32:32,770 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40ec09d-bea3-4656-b7ee-19ca3021f6f4/bin/utaipan-TEXQjIfE4P/data/5a51b38f4/abd49b9f64364ed5b3c03577cdcecb60/FLAGdb55a8b63 [2021-11-20 23:32:33,003 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40ec09d-bea3-4656-b7ee-19ca3021f6f4/bin/utaipan-TEXQjIfE4P/data/5a51b38f4/abd49b9f64364ed5b3c03577cdcecb60 [2021-11-20 23:32:33,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:32:33,009 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:32:33,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:32:33,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:32:33,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:32:33,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:32:33" (1/1) ... [2021-11-20 23:32:33,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5857d60b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:33, skipping insertion in model container [2021-11-20 23:32:33,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:32:33" (1/1) ... [2021-11-20 23:32:33,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:32:33,217 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:32:37,836 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40ec09d-bea3-4656-b7ee-19ca3021f6f4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491234,491247] [2021-11-20 23:32:37,844 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40ec09d-bea3-4656-b7ee-19ca3021f6f4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491403,491416] [2021-11-20 23:32:37,845 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40ec09d-bea3-4656-b7ee-19ca3021f6f4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491570,491583] [2021-11-20 23:32:37,845 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40ec09d-bea3-4656-b7ee-19ca3021f6f4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491738,491751] [2021-11-20 23:32:37,879 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:32:37,985 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:32:38,507 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40ec09d-bea3-4656-b7ee-19ca3021f6f4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491234,491247] [2021-11-20 23:32:38,508 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40ec09d-bea3-4656-b7ee-19ca3021f6f4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491403,491416] [2021-11-20 23:32:38,508 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40ec09d-bea3-4656-b7ee-19ca3021f6f4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491570,491583] [2021-11-20 23:32:38,509 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40ec09d-bea3-4656-b7ee-19ca3021f6f4/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491738,491751] [2021-11-20 23:32:38,521 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:32:38,829 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:32:38,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:38 WrapperNode [2021-11-20 23:32:38,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:32:38,832 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:32:38,832 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:32:38,833 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:32:38,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:38" (1/1) ... [2021-11-20 23:32:39,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:38" (1/1) ... [2021-11-20 23:32:39,319 INFO L137 Inliner]: procedures = 567, calls = 5326, calls flagged for inlining = 289, calls inlined = 261, statements flattened = 11363 [2021-11-20 23:32:39,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:32:39,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:32:39,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:32:39,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:32:39,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:38" (1/1) ... [2021-11-20 23:32:39,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:38" (1/1) ... [2021-11-20 23:32:39,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:38" (1/1) ... [2021-11-20 23:32:39,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:38" (1/1) ... [2021-11-20 23:32:39,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:38" (1/1) ... [2021-11-20 23:32:39,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:38" (1/1) ... [2021-11-20 23:32:39,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:38" (1/1) ... [2021-11-20 23:32:39,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:32:39,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:32:39,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:32:39,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:32:39,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:38" (1/1) ... [2021-11-20 23:32:39,820 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:32:39,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40ec09d-bea3-4656-b7ee-19ca3021f6f4/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:32:39,851 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40ec09d-bea3-4656-b7ee-19ca3021f6f4/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:32:39,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c40ec09d-bea3-4656-b7ee-19ca3021f6f4/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:32:40,016 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_up [2021-11-20 23:32:40,017 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_up [2021-11-20 23:32:40,017 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_media_task [2021-11-20 23:32:40,017 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_media_task [2021-11-20 23:32:40,017 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-20 23:32:40,017 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-20 23:32:40,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-20 23:32:40,018 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-20 23:32:40,018 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-20 23:32:40,018 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-20 23:32:40,018 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-20 23:32:40,019 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-20 23:32:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_select_media [2021-11-20 23:32:40,019 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_select_media [2021-11-20 23:32:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit_le [2021-11-20 23:32:40,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit_le [2021-11-20 23:32:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 23:32:40,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 23:32:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-20 23:32:40,020 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-20 23:32:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-20 23:32:40,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-20 23:32:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-20 23:32:40,021 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-20 23:32:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-20 23:32:40,021 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-20 23:32:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-20 23:32:40,035 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-20 23:32:40,035 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-20 23:32:40,035 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-20 23:32:40,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2021-11-20 23:32:40,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2021-11-20 23:32:40,036 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-20 23:32:40,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-20 23:32:40,036 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-20 23:32:40,036 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-20 23:32:40,037 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2021-11-20 23:32:40,037 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2021-11-20 23:32:40,037 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-20 23:32:40,037 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-20 23:32:40,037 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-20 23:32:40,038 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-20 23:32:40,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-20 23:32:40,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-20 23:32:40,038 INFO L130 BoogieDeclarations]: Found specification of procedure pnic_do_nway [2021-11-20 23:32:40,038 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic_do_nway [2021-11-20 23:32:40,038 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-20 23:32:40,039 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-20 23:32:40,039 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-20 23:32:40,039 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-20 23:32:40,039 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-20 23:32:40,039 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-20 23:32:40,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-20 23:32:40,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-20 23:32:40,040 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-20 23:32:40,041 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-20 23:32:40,041 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-20 23:32:40,041 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-20 23:32:40,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:32:40,041 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_set_wolopts [2021-11-20 23:32:40,042 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_set_wolopts [2021-11-20 23:32:40,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_61 [2021-11-20 23:32:40,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_61 [2021-11-20 23:32:40,042 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_resume [2021-11-20 23:32:40,042 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_resume [2021-11-20 23:32:40,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-20 23:32:40,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-20 23:32:40,043 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_interrupt [2021-11-20 23:32:40,043 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_interrupt [2021-11-20 23:32:40,043 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-20 23:32:40,043 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-20 23:32:40,044 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___3 [2021-11-20 23:32:40,044 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___3 [2021-11-20 23:32:40,045 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___1 [2021-11-20 23:32:40,045 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___1 [2021-11-20 23:32:40,045 INFO L130 BoogieDeclarations]: Found specification of procedure t21142_media_task [2021-11-20 23:32:40,046 INFO L138 BoogieDeclarations]: Found implementation of procedure t21142_media_task [2021-11-20 23:32:40,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 23:32:40,046 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___5 [2021-11-20 23:32:40,046 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___5 [2021-11-20 23:32:40,047 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___4 [2021-11-20 23:32:40,047 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___4 [2021-11-20 23:32:40,048 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-20 23:32:40,048 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-20 23:32:40,048 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-20 23:32:40,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-20 23:32:40,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 23:32:40,049 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-20 23:32:40,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-20 23:32:40,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:32:40,050 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-11-20 23:32:40,050 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-11-20 23:32:40,050 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-20 23:32:40,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-20 23:32:40,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-20 23:32:40,051 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-20 23:32:40,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-20 23:32:40,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-20 23:32:40,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-20 23:32:40,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-20 23:32:40,052 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-20 23:32:40,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-20 23:32:40,053 INFO L130 BoogieDeclarations]: Found specification of procedure pnic_timer [2021-11-20 23:32:40,053 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic_timer [2021-11-20 23:32:40,053 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-20 23:32:40,054 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-20 23:32:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-20 23:32:40,058 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-20 23:32:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure poll_tulip [2021-11-20 23:32:40,059 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_tulip [2021-11-20 23:32:40,060 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_mdio_write [2021-11-20 23:32:40,060 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_mdio_write [2021-11-20 23:32:40,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-20 23:32:40,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-20 23:32:40,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:32:40,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-20 23:32:40,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-20 23:32:40,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-20 23:32:40,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-20 23:32:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-20 23:32:40,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-20 23:32:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-20 23:32:40,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-20 23:32:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:32:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-20 23:32:40,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-20 23:32:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-20 23:32:40,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-20 23:32:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:32:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure t21142_start_nway [2021-11-20 23:32:40,070 INFO L138 BoogieDeclarations]: Found implementation of procedure t21142_start_nway [2021-11-20 23:32:40,070 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-20 23:32:40,070 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-20 23:32:40,070 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-20 23:32:40,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-20 23:32:40,070 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 23:32:40,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 23:32:40,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_tulip_private [2021-11-20 23:32:40,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_tulip_private [2021-11-20 23:32:40,071 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-20 23:32:40,071 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-20 23:32:40,071 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-20 23:32:40,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-20 23:32:40,072 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-20 23:32:40,072 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-20 23:32:40,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-20 23:32:40,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-20 23:32:40,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_mii_lock_of_tulip_private [2021-11-20 23:32:40,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_mii_lock_of_tulip_private [2021-11-20 23:32:40,073 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-20 23:32:40,073 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-20 23:32:40,073 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_tulip_private [2021-11-20 23:32:40,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_tulip_private [2021-11-20 23:32:40,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:32:40,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:32:40,074 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_close [2021-11-20 23:32:40,074 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_close [2021-11-20 23:32:40,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 23:32:40,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 23:32:40,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 23:32:40,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 23:32:40,075 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2021-11-20 23:32:40,075 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2021-11-20 23:32:40,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-20 23:32:40,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-20 23:32:40,075 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-20 23:32:40,075 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-20 23:32:40,075 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_set_power_state [2021-11-20 23:32:40,076 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_set_power_state [2021-11-20 23:32:40,076 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-20 23:32:40,076 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-20 23:32:40,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_tulip_cleanup_19_2 [2021-11-20 23:32:40,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_tulip_cleanup_19_2 [2021-11-20 23:32:40,076 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq [2021-11-20 23:32:40,077 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq [2021-11-20 23:32:40,077 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-20 23:32:40,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-20 23:32:40,077 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_tx_timeout [2021-11-20 23:32:40,077 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_tx_timeout [2021-11-20 23:32:40,077 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_check_duplex [2021-11-20 23:32:40,078 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_check_duplex [2021-11-20 23:32:40,078 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-20 23:32:40,078 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-20 23:32:40,078 INFO L130 BoogieDeclarations]: Found specification of procedure bitrev32 [2021-11-20 23:32:40,078 INFO L138 BoogieDeclarations]: Found implementation of procedure bitrev32 [2021-11-20 23:32:40,078 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2021-11-20 23:32:40,079 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2021-11-20 23:32:40,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 23:32:40,079 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 23:32:40,079 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-20 23:32:40,079 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-20 23:32:40,079 INFO L130 BoogieDeclarations]: Found specification of procedure comet_timer [2021-11-20 23:32:40,080 INFO L138 BoogieDeclarations]: Found implementation of procedure comet_timer [2021-11-20 23:32:40,080 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2021-11-20 23:32:40,080 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2021-11-20 23:32:40,080 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-20 23:32:40,080 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-20 23:32:40,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:32:40,081 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_mdio_read [2021-11-20 23:32:40,081 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_mdio_read [2021-11-20 23:32:40,081 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-20 23:32:40,081 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-20 23:32:40,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:32:40,081 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-20 23:32:40,082 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-20 23:32:40,082 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-20 23:32:40,082 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-20 23:32:40,082 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_mwi [2021-11-20 23:32:40,082 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_mwi [2021-11-20 23:32:40,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:32:40,083 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_down [2021-11-20 23:32:40,083 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_down [2021-11-20 23:32:40,083 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_stop_rxtx___2 [2021-11-20 23:32:40,083 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_stop_rxtx___2 [2021-11-20 23:32:40,083 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_remove_one [2021-11-20 23:32:40,083 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_remove_one [2021-11-20 23:32:40,084 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-20 23:32:40,084 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-20 23:32:40,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-20 23:32:40,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-20 23:32:40,084 INFO L130 BoogieDeclarations]: Found specification of procedure mxic_timer [2021-11-20 23:32:40,084 INFO L138 BoogieDeclarations]: Found implementation of procedure mxic_timer [2021-11-20 23:32:40,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-20 23:32:40,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-20 23:32:40,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-20 23:32:40,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-20 23:32:40,085 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_free_ring [2021-11-20 23:32:40,085 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_free_ring [2021-11-20 23:32:40,086 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-20 23:32:40,086 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-20 23:32:40,086 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_refill_rx [2021-11-20 23:32:40,086 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_refill_rx [2021-11-20 23:32:40,103 INFO L130 BoogieDeclarations]: Found specification of procedure pnic2_timer [2021-11-20 23:32:40,106 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic2_timer [2021-11-20 23:32:40,107 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-20 23:32:40,107 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-20 23:32:40,107 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-20 23:32:40,107 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-20 23:32:40,107 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-20 23:32:40,107 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-20 23:32:40,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_62 [2021-11-20 23:32:40,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_62 [2021-11-20 23:32:40,109 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-20 23:32:40,109 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-20 23:32:40,109 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 23:32:40,109 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 23:32:40,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:32:40,110 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx [2021-11-20 23:32:40,110 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx [2021-11-20 23:32:40,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 23:32:40,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 23:32:40,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61___0 [2021-11-20 23:32:40,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61___0 [2021-11-20 23:32:40,111 INFO L130 BoogieDeclarations]: Found specification of procedure enable_irq [2021-11-20 23:32:40,111 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_irq [2021-11-20 23:32:40,111 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_start_rxtx [2021-11-20 23:32:40,111 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_start_rxtx [2021-11-20 23:32:40,111 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-20 23:32:40,112 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-20 23:32:40,112 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_open [2021-11-20 23:32:40,112 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_open [2021-11-20 23:32:40,112 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-20 23:32:40,112 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-20 23:32:40,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-20 23:32:40,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-20 23:32:40,113 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-20 23:32:40,113 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-20 23:32:40,113 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-20 23:32:40,113 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-20 23:32:40,113 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-20 23:32:40,113 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-20 23:32:40,114 INFO L130 BoogieDeclarations]: Found specification of procedure pnic2_start_nway [2021-11-20 23:32:40,114 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic2_start_nway [2021-11-20 23:32:40,114 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-20 23:32:40,114 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-20 23:32:40,114 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_read_eeprom [2021-11-20 23:32:40,114 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_read_eeprom [2021-11-20 23:32:40,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:32:40,115 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_timer [2021-11-20 23:32:40,115 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_timer [2021-11-20 23:32:40,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-20 23:32:40,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-20 23:32:41,338 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:32:41,343 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:32:42,614 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 23:32:51,212 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-20 23:32:51,371 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:32:54,648 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:32:54,649 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 23:32:54,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:32:54 BoogieIcfgContainer [2021-11-20 23:32:54,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:32:54,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:32:54,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:32:54,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:32:54,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:32:33" (1/3) ... [2021-11-20 23:32:54,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33fb6586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:32:54, skipping insertion in model container [2021-11-20 23:32:54,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:38" (2/3) ... [2021-11-20 23:32:54,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33fb6586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:32:54, skipping insertion in model container [2021-11-20 23:32:54,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:32:54" (3/3) ... [2021-11-20 23:32:54,666 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2021-11-20 23:32:54,672 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:32:54,672 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-20 23:32:54,738 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:32:54,744 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:32:54,745 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-20 23:32:54,825 INFO L276 IsEmpty]: Start isEmpty. Operand has 2632 states, 1547 states have (on average 1.3529411764705883) internal successors, (2093), 1648 states have internal predecessors, (2093), 951 states have call successors, (951), 133 states have call predecessors, (951), 132 states have return successors, (944), 899 states have call predecessors, (944), 944 states have call successors, (944) [2021-11-20 23:32:54,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-20 23:32:54,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:32:54,843 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:32:54,844 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:32:54,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:32:54,849 INFO L85 PathProgramCache]: Analyzing trace with hash 425106636, now seen corresponding path program 1 times [2021-11-20 23:32:54,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:32:54,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706467703] [2021-11-20 23:32:54,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:32:54,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:32:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:32:55,807 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-20 23:32:55,807 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:32:55,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706467703] [2021-11-20 23:32:55,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706467703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:32:55,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:32:55,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:32:55,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272192983] [2021-11-20 23:32:55,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:32:55,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:32:55,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:32:55,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:32:55,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:32:55,862 INFO L87 Difference]: Start difference. First operand has 2632 states, 1547 states have (on average 1.3529411764705883) internal successors, (2093), 1648 states have internal predecessors, (2093), 951 states have call successors, (951), 133 states have call predecessors, (951), 132 states have return successors, (944), 899 states have call predecessors, (944), 944 states have call successors, (944) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-20 23:33:01,469 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:02,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:33:02,681 INFO L93 Difference]: Finished difference Result 7601 states and 11697 transitions. [2021-11-20 23:33:02,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:33:02,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 151 [2021-11-20 23:33:02,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:33:02,740 INFO L225 Difference]: With dead ends: 7601 [2021-11-20 23:33:02,741 INFO L226 Difference]: Without dead ends: 4985 [2021-11-20 23:33:02,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:33:02,772 INFO L933 BasicCegarLoop]: 4397 mSDtfsCounter, 3591 mSDsluCounter, 3928 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3591 SdHoareTripleChecker+Valid, 7903 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:33:02,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3591 Valid, 7903 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 885 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2021-11-20 23:33:02,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4985 states. [2021-11-20 23:33:03,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4985 to 4970. [2021-11-20 23:33:03,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4970 states, 2925 states have (on average 1.3442735042735043) internal successors, (3932), 3114 states have internal predecessors, (3932), 1785 states have call successors, (1785), 258 states have call predecessors, (1785), 257 states have return successors, (1781), 1696 states have call predecessors, (1781), 1781 states have call successors, (1781) [2021-11-20 23:33:03,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4970 states to 4970 states and 7498 transitions. [2021-11-20 23:33:03,526 INFO L78 Accepts]: Start accepts. Automaton has 4970 states and 7498 transitions. Word has length 151 [2021-11-20 23:33:03,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:33:03,530 INFO L470 AbstractCegarLoop]: Abstraction has 4970 states and 7498 transitions. [2021-11-20 23:33:03,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-20 23:33:03,532 INFO L276 IsEmpty]: Start isEmpty. Operand 4970 states and 7498 transitions. [2021-11-20 23:33:03,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-20 23:33:03,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:33:03,549 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:33:03,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:33:03,550 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:33:03,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:33:03,552 INFO L85 PathProgramCache]: Analyzing trace with hash 311107550, now seen corresponding path program 1 times [2021-11-20 23:33:03,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:33:03,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870458971] [2021-11-20 23:33:03,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:33:03,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:33:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:33:03,979 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-20 23:33:03,979 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:33:03,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870458971] [2021-11-20 23:33:03,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870458971] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:33:03,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:33:03,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:33:03,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401036178] [2021-11-20 23:33:03,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:33:03,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:33:03,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:33:03,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:33:03,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:33:03,983 INFO L87 Difference]: Start difference. First operand 4970 states and 7498 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-20 23:33:09,767 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:10,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:33:10,247 INFO L93 Difference]: Finished difference Result 11024 states and 16652 transitions. [2021-11-20 23:33:10,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:33:10,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 159 [2021-11-20 23:33:10,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:33:10,314 INFO L225 Difference]: With dead ends: 11024 [2021-11-20 23:33:10,314 INFO L226 Difference]: Without dead ends: 6081 [2021-11-20 23:33:10,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:33:10,350 INFO L933 BasicCegarLoop]: 4133 mSDtfsCounter, 2643 mSDsluCounter, 3900 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2643 SdHoareTripleChecker+Valid, 7615 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:33:10,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2643 Valid, 7615 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 914 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2021-11-20 23:33:10,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6081 states. [2021-11-20 23:33:10,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6081 to 6055. [2021-11-20 23:33:10,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6055 states, 3615 states have (on average 1.3502074688796681) internal successors, (4881), 3833 states have internal predecessors, (4881), 2126 states have call successors, (2126), 313 states have call predecessors, (2126), 311 states have return successors, (2122), 2022 states have call predecessors, (2122), 2122 states have call successors, (2122) [2021-11-20 23:33:10,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6055 states to 6055 states and 9129 transitions. [2021-11-20 23:33:10,970 INFO L78 Accepts]: Start accepts. Automaton has 6055 states and 9129 transitions. Word has length 159 [2021-11-20 23:33:10,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:33:10,972 INFO L470 AbstractCegarLoop]: Abstraction has 6055 states and 9129 transitions. [2021-11-20 23:33:10,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-20 23:33:10,973 INFO L276 IsEmpty]: Start isEmpty. Operand 6055 states and 9129 transitions. [2021-11-20 23:33:10,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-20 23:33:10,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:33:10,978 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:33:10,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:33:10,979 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:33:10,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:33:10,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1999472241, now seen corresponding path program 1 times [2021-11-20 23:33:10,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:33:10,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313535146] [2021-11-20 23:33:10,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:33:10,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:33:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:33:11,496 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-20 23:33:11,496 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:33:11,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313535146] [2021-11-20 23:33:11,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313535146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:33:11,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:33:11,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:33:11,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625179979] [2021-11-20 23:33:11,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:33:11,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:33:11,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:33:11,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:33:11,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:33:11,500 INFO L87 Difference]: Start difference. First operand 6055 states and 9129 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-20 23:33:15,545 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:17,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:33:17,521 INFO L93 Difference]: Finished difference Result 15534 states and 23385 transitions. [2021-11-20 23:33:17,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:33:17,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 160 [2021-11-20 23:33:17,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:33:17,617 INFO L225 Difference]: With dead ends: 15534 [2021-11-20 23:33:17,617 INFO L226 Difference]: Without dead ends: 9506 [2021-11-20 23:33:17,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:33:17,665 INFO L933 BasicCegarLoop]: 4367 mSDtfsCounter, 3447 mSDsluCounter, 3886 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3447 SdHoareTripleChecker+Valid, 7843 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:33:17,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3447 Valid, 7843 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 898 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2021-11-20 23:33:17,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9506 states. [2021-11-20 23:33:18,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9506 to 9468. [2021-11-20 23:33:18,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9468 states, 5622 states have (on average 1.3413376022767698) internal successors, (7541), 5966 states have internal predecessors, (7541), 3343 states have call successors, (3343), 503 states have call predecessors, (3343), 500 states have return successors, (3342), 3170 states have call predecessors, (3342), 3339 states have call successors, (3342) [2021-11-20 23:33:18,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9468 states to 9468 states and 14226 transitions. [2021-11-20 23:33:18,539 INFO L78 Accepts]: Start accepts. Automaton has 9468 states and 14226 transitions. Word has length 160 [2021-11-20 23:33:18,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:33:18,540 INFO L470 AbstractCegarLoop]: Abstraction has 9468 states and 14226 transitions. [2021-11-20 23:33:18,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-20 23:33:18,542 INFO L276 IsEmpty]: Start isEmpty. Operand 9468 states and 14226 transitions. [2021-11-20 23:33:18,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-20 23:33:18,546 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:33:18,546 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:33:18,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:33:18,547 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:33:18,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:33:18,547 INFO L85 PathProgramCache]: Analyzing trace with hash -933088271, now seen corresponding path program 1 times [2021-11-20 23:33:18,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:33:18,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019124808] [2021-11-20 23:33:18,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:33:18,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:33:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:33:18,896 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-20 23:33:18,896 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:33:18,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019124808] [2021-11-20 23:33:18,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019124808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:33:18,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:33:18,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:33:18,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601714455] [2021-11-20 23:33:18,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:33:18,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:33:18,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:33:18,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:33:18,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:33:18,900 INFO L87 Difference]: Start difference. First operand 9468 states and 14226 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-20 23:33:31,724 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:34,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:33:34,410 INFO L93 Difference]: Finished difference Result 34033 states and 51055 transitions. [2021-11-20 23:33:34,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:33:34,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 165 [2021-11-20 23:33:34,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:33:34,583 INFO L225 Difference]: With dead ends: 34033 [2021-11-20 23:33:34,583 INFO L226 Difference]: Without dead ends: 24592 [2021-11-20 23:33:34,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:33:34,648 INFO L933 BasicCegarLoop]: 5256 mSDtfsCounter, 8999 mSDsluCounter, 7686 mSDsCounter, 0 mSdLazyCounter, 6163 mSolverCounterSat, 1851 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9091 SdHoareTripleChecker+Valid, 11735 SdHoareTripleChecker+Invalid, 8015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1851 IncrementalHoareTripleChecker+Valid, 6163 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:33:34,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9091 Valid, 11735 Invalid, 8015 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1851 Valid, 6163 Invalid, 1 Unknown, 0 Unchecked, 14.7s Time] [2021-11-20 23:33:34,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24592 states. [2021-11-20 23:33:36,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24592 to 24484. [2021-11-20 23:33:36,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24484 states, 14490 states have (on average 1.3371980676328503) internal successors, (19376), 15410 states have internal predecessors, (19376), 8656 states have call successors, (8656), 1342 states have call predecessors, (8656), 1335 states have return successors, (8661), 8184 states have call predecessors, (8661), 8652 states have call successors, (8661) [2021-11-20 23:33:36,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24484 states to 24484 states and 36693 transitions. [2021-11-20 23:33:36,657 INFO L78 Accepts]: Start accepts. Automaton has 24484 states and 36693 transitions. Word has length 165 [2021-11-20 23:33:36,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:33:36,658 INFO L470 AbstractCegarLoop]: Abstraction has 24484 states and 36693 transitions. [2021-11-20 23:33:36,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-20 23:33:36,659 INFO L276 IsEmpty]: Start isEmpty. Operand 24484 states and 36693 transitions. [2021-11-20 23:33:36,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-20 23:33:36,662 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:33:36,663 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:33:36,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:33:36,663 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:33:36,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:33:36,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1766944042, now seen corresponding path program 1 times [2021-11-20 23:33:36,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:33:36,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489657555] [2021-11-20 23:33:36,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:33:36,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:33:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:33:36,953 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-20 23:33:36,953 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:33:36,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489657555] [2021-11-20 23:33:36,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489657555] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:33:36,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:33:36,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:33:36,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134887251] [2021-11-20 23:33:36,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:33:36,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:33:36,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:33:36,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:33:36,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:33:36,956 INFO L87 Difference]: Start difference. First operand 24484 states and 36693 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-20 23:33:42,668 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:44,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:33:44,231 INFO L93 Difference]: Finished difference Result 69483 states and 104035 transitions. [2021-11-20 23:33:44,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:33:44,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 172 [2021-11-20 23:33:44,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:33:44,628 INFO L225 Difference]: With dead ends: 69483 [2021-11-20 23:33:44,628 INFO L226 Difference]: Without dead ends: 45026 [2021-11-20 23:33:44,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:33:44,728 INFO L933 BasicCegarLoop]: 4689 mSDtfsCounter, 3632 mSDsluCounter, 3912 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3632 SdHoareTripleChecker+Valid, 8179 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:33:44,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3632 Valid, 8179 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 937 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2021-11-20 23:33:44,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45026 states. [2021-11-20 23:33:47,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45026 to 44977. [2021-11-20 23:33:47,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44977 states, 26639 states have (on average 1.335635722061639) internal successors, (35580), 28331 states have internal predecessors, (35580), 15822 states have call successors, (15822), 2538 states have call predecessors, (15822), 2513 states have return successors, (15875), 14919 states have call predecessors, (15875), 15818 states have call successors, (15875) [2021-11-20 23:33:48,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44977 states to 44977 states and 67277 transitions. [2021-11-20 23:33:48,163 INFO L78 Accepts]: Start accepts. Automaton has 44977 states and 67277 transitions. Word has length 172 [2021-11-20 23:33:48,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:33:48,164 INFO L470 AbstractCegarLoop]: Abstraction has 44977 states and 67277 transitions. [2021-11-20 23:33:48,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-20 23:33:48,165 INFO L276 IsEmpty]: Start isEmpty. Operand 44977 states and 67277 transitions. [2021-11-20 23:33:48,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-20 23:33:48,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:33:48,170 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:33:48,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:33:48,171 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:33:48,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:33:48,172 INFO L85 PathProgramCache]: Analyzing trace with hash 901733676, now seen corresponding path program 1 times [2021-11-20 23:33:48,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:33:48,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905670627] [2021-11-20 23:33:48,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:33:48,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:33:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:33:48,690 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-20 23:33:48,690 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:33:48,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905670627] [2021-11-20 23:33:48,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905670627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:33:48,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:33:48,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:33:48,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444822820] [2021-11-20 23:33:48,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:33:48,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:33:48,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:33:48,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:33:48,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:33:48,692 INFO L87 Difference]: Start difference. First operand 44977 states and 67277 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-20 23:33:54,726 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:56,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:33:56,842 INFO L93 Difference]: Finished difference Result 133717 states and 200037 transitions. [2021-11-20 23:33:56,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:33:56,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 172 [2021-11-20 23:33:56,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:33:57,317 INFO L225 Difference]: With dead ends: 133717 [2021-11-20 23:33:57,317 INFO L226 Difference]: Without dead ends: 88767 [2021-11-20 23:33:57,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:33:57,523 INFO L933 BasicCegarLoop]: 4538 mSDtfsCounter, 3613 mSDsluCounter, 3932 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3613 SdHoareTripleChecker+Valid, 8042 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:33:57,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3613 Valid, 8042 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 930 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2021-11-20 23:33:57,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88767 states. [2021-11-20 23:34:02,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88767 to 88714. [2021-11-20 23:34:02,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88714 states, 52541 states have (on average 1.3341390533107478) internal successors, (70097), 55913 states have internal predecessors, (70097), 31199 states have call successors, (31199), 5020 states have call predecessors, (31199), 4971 states have return successors, (31309), 29392 states have call predecessors, (31309), 31195 states have call successors, (31309) [2021-11-20 23:34:03,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88714 states to 88714 states and 132605 transitions. [2021-11-20 23:34:03,362 INFO L78 Accepts]: Start accepts. Automaton has 88714 states and 132605 transitions. Word has length 172 [2021-11-20 23:34:03,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:34:03,368 INFO L470 AbstractCegarLoop]: Abstraction has 88714 states and 132605 transitions. [2021-11-20 23:34:03,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-20 23:34:03,368 INFO L276 IsEmpty]: Start isEmpty. Operand 88714 states and 132605 transitions. [2021-11-20 23:34:03,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-20 23:34:03,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:34:03,373 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:34:03,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:34:03,373 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:34:03,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:34:03,374 INFO L85 PathProgramCache]: Analyzing trace with hash -615425435, now seen corresponding path program 1 times [2021-11-20 23:34:03,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:34:03,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819759491] [2021-11-20 23:34:03,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:34:03,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:34:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:34:03,705 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-20 23:34:03,705 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:34:03,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819759491] [2021-11-20 23:34:03,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819759491] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:34:03,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:34:03,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:34:03,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272398882] [2021-11-20 23:34:03,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:34:03,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:34:03,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:34:03,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:34:03,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:34:03,709 INFO L87 Difference]: Start difference. First operand 88714 states and 132605 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-20 23:34:09,765 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:34:13,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:34:13,938 INFO L93 Difference]: Finished difference Result 259089 states and 388453 transitions. [2021-11-20 23:34:13,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:34:13,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 173 [2021-11-20 23:34:13,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:34:15,011 INFO L225 Difference]: With dead ends: 259089 [2021-11-20 23:34:15,011 INFO L226 Difference]: Without dead ends: 170402 [2021-11-20 23:34:15,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:34:15,392 INFO L933 BasicCegarLoop]: 4633 mSDtfsCounter, 3622 mSDsluCounter, 3822 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3622 SdHoareTripleChecker+Valid, 8044 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:34:15,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3622 Valid, 8044 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 912 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2021-11-20 23:34:15,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170402 states. [2021-11-20 23:34:24,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170402 to 170274. [2021-11-20 23:34:24,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170274 states, 101026 states have (on average 1.336982558945222) internal successors, (135070), 107563 states have internal predecessors, (135070), 59712 states have call successors, (59712), 9696 states have call predecessors, (59712), 9533 states have return successors, (60912), 56058 states have call predecessors, (60912), 59708 states have call successors, (60912) [2021-11-20 23:34:26,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170274 states to 170274 states and 255694 transitions. [2021-11-20 23:34:26,293 INFO L78 Accepts]: Start accepts. Automaton has 170274 states and 255694 transitions. Word has length 173 [2021-11-20 23:34:26,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:34:26,295 INFO L470 AbstractCegarLoop]: Abstraction has 170274 states and 255694 transitions. [2021-11-20 23:34:26,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-20 23:34:26,296 INFO L276 IsEmpty]: Start isEmpty. Operand 170274 states and 255694 transitions. [2021-11-20 23:34:26,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-20 23:34:26,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:34:26,302 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:34:26,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 23:34:26,302 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:34:26,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:34:26,304 INFO L85 PathProgramCache]: Analyzing trace with hash 2025894746, now seen corresponding path program 1 times [2021-11-20 23:34:26,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:34:26,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35749090] [2021-11-20 23:34:26,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:34:26,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:34:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:34:26,623 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2021-11-20 23:34:26,624 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:34:26,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35749090] [2021-11-20 23:34:26,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35749090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:34:26,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:34:26,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:34:26,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552156830] [2021-11-20 23:34:26,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:34:26,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:34:26,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:34:26,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:34:26,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:34:26,626 INFO L87 Difference]: Start difference. First operand 170274 states and 255694 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-20 23:34:33,703 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:34:36,168 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []